INGREDIENTS
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¼ cup olive oil
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1 onion, chopped
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Kosher salt, freshly ground pepper
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2 garlic cloves, finely chopped
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2 28-oz. cans crushed tomatoes
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1 tablespoon light brown sugar
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1 tablespoon red wine vinegar
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1 bay leaf
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Meatballs and Assembly
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Vegetable oil spray
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2 slices country bread, crusts removed, torn into small pieces
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½ cup milk
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1 pound ground chicken
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2 ounces finely grated Parmesan, plus more
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2 tablespoons finely chopped fresh flat-leaf parsley
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2 garlic cloves, finely chopped
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2 eggs, beaten
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1½ teaspoons kosher salt
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½ teaspoon freshly ground black pepper
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12 slider rolls, preferably potato